I am not sure the rest of your opinions on the current roster, but I must say that to me they seem a bit underpowered overall. Now I find them a very cool team but let us see how they do against some other teams in Marvel and DC shall we?

Current Guardians (Adam Warlock, Starlord, Drax, Quasar, Rocket Raccoon, Groot (normal sized), Gamora)

vs (not a gauntlet)

Classic Avengers (Captain America, Hawkeye, Thor, Vision, Iron Man, Wasp and Giant Man)

Mighty Avengers (Ms. Marvel, Iron Man, Ares, Sentry, Wonder man, Black Widow and Wasp)

Defenders (Savage Hulk, Silver Surfer, Dr. Strange, Namor, Hellcat, Darkhawk, Daemon Hellstorm)

X-men (Wolverine, Xavier, Rogue, Ice man, Colossus, Jean Grey, Cyclops)

JLA (Superman, Wonder Woman, Martian Manhunter, Batman, Flash, Green Lantern (Hal) and Hawkgirl)

Doom Patrol

Cosmic Avengers (team I decided to throw togther: Beta Ray Bill, Quasar (Wendell), Silver Surfer, Major Victory and Nova)

Acts of Vengeance (Loki, Dr. Doom, Magneto, Red Skull, Apocalypse, Mandarin and Kingpin)

Some big singles matches for the team:

Super Boy Prime

Red Hulk

WWH

Galactus

Dreaming Celestial

Imperix

Anti Monitor

Ultron

Annihilus from Annihilation

Tyrant

Morg WoL